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Open serial ports

Posted by Ritchie Lee on January 25, 2013 at 5:57pm

Hello,

How many serial ports are available to control external devices on the APM2.5?

This is my best estimate so far:

4 USARTS on the Atmega2560

UART0 for wireless telemetry, also shared with usb serial

UART1 for GPS

UART2 may be used as alternative wireless telemetry.  If not, then this is available for use.

UART3 is available for use? Is this exposed?

Thanks

Ritchie

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Replies

  • Søren Kuula January 26, 2013 at 12:47am

    Hi,

    Yes you are right, except that USART3 is used for SD card logging in SPI mode.

    Regards

    Soren

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